the ntsb and coast guard say it could take months to determine the cause of the crash. >>> b.a.r.t. riders who travel across the bay last night should expect slight delays starting today. crews will begin the first phase of an earthquake safety project on that transbay tube. the retro fit is scheduled after 10:00 p.m. to minimize the number of b.a.r.t. riders affected. only one track from that transbay tube will be operating during the construction. brace yourselves for slowdowns for the trains. the work should be done by early february. >>> it is 6:52 now. less than two hours from right now president obama will take the oath of office at the u.s. capitol with an estimated 800,000 spectators looking on. let's give you a live look at washington d.c. some of the choir there. the beginning of president obama's second term will be marked with a day-long celebration but there are also significant challenges ahead. jim is a professor of political science at santa clara university. good morning for you. in terms of the president's short-term agenda, what's on that short-term agenda? >> one